CLEMENT VIII. (Aegidius Munoz), antipope from 1425 to July 26, 1429, was a canon at Barcelona until elected by three cardinals created by the antipope Benedict XIII. Clement was recognized by Alphonso V. of Aragon, who was hostile to Pope Martin V. on account of the latter's opposition to his claims to the kingdom of Naples. When Alphonso and Martin became reconciled, Cle ment abdicated and spent his last years as bishop of Majorca. He died on Dec. 28, 1446.
See L. Pastor, History of the Popes, vol. i. (1899) ; M. Creighton, History of the Papacy, vol. ii. (1899) ; and bibl. on MARTIN V.